There were a total of 45 suicides in Louth in 2011 according to new figures.
This number was three more then in 2010 and the same as in 2009.
The amount of people who took their own lives equates to a rate of 12.2 per 100,000 in population between 2009 and 2011.
In 2011, this figure was slightly higher at 13 per 100,000 of population.
This figure was higher then the national average of 11.4 per 100,000.
The 16 who took their own lives equates to one death by suicide per every 8,193 people in the county.
Last year Monaghan had the lowest suicide rate in the state with just 5 people per 100,000 taking their own lives.
According to the figures just three people took their own lives in Monaghan in 2011, down from 11 the year before.
An analysis of deaths by suicide officially recorded between 2009 and 2011 also shows suicide rates in Laois and Westmeath and the South-East, including Wexford, Waterford, and Tipperary, above average.
According to statistics compiled by the CSO, 1,563 people in the Republic took their own lives between 2009 and 2011, a national suicide rate of 11.4 deaths per 100,000 population. In contrast, a total of 636 people were killed in traffic accidents over the same period. While there has been a strong downward trend in road fatalities over the past decade, the number of deaths by suicide has shown an increase since 2007, so that they are now at almost two-and-a-half times the level of road fatalities. Official figures show there were 552 suicides in 2009, falling to 486 in 2010 and rising again to 525 last year. On a provincial basis, Munster has the highest suicide rate at 13.8 deaths followed by Connacht (11.9), Leinster (10.2) and Ulster (9.5). Galway and Dublin have the lowest suicide rate of all the major cities at 8.4 deaths, although the figure rises to 10.6 per 100,000 population in the Dublin City Council area. A total of 319 suicides were recorded in the capital over the three-year period.